Removable tumbler mechanism for locks



May a, 1924.

W. J. CARROLL REMOVABLE TUMBL ER MECHANISM FOR LOCKS Filed June 30 1921 Patented May 6, 1924.

lA ltldt f barren srAfrEs'PA F- WILLIAM J. CARROLL, on NEW HAVEN, CONNECTICUT, ASSIGNORTO sane-Eur & com- PANY, or NEW HAVEN, connnoricu'rl REMOVABLE- TUMBLER. MECHANISM FOR LOCKS.

Application filed June 30, 1921. Serial No. 481,604. e

To all whom it may concern:

useful Improvements in Removable Tumbler Mechanisms for Locks, of which the following is a full, clear, and exact description.

This invention relates. to looks and more especially to the provision of an operating v or controlling mechanism of the swinging tumbler type for the latch bolt or the dead bolt of a lock which shall be bodily removable as a unit from the lock, casing.

Heretofore it has been necessary, if it was desired to provide 'a new key or set of keys for a door, to change the look by the entire removal of the lock thereon and the substitution of a new lock therefor. This often occurs when the key to a lockupon a door has been lost or is stolen or in some way finds its way into the hands of a person whom it is desired to exclude.

One object of this invention is the provision of a controlling mechanism for the bolt of a look so constructed that the tumblers actuated by the key may-be bodily removed as a unit and replaced by another set of tumblers so that a complete key change will be efiected.

Another object of this invention is to provide a removable swinging-tumbler control-- ling mechanism for looks, which shall be bodily removable as a unit from the lock.

casing.

A still further object ofmy invention is to provide a unitary controlling mechanism for the dead bolt or the latch bolt of a lock, which shall be so constructed that the entire mechanism for controlling the bolt'may be constructed and used as unit wherein all parts of this mechanism are' so connected that they may be bodily removed "from a lock casing and replaced by a similar unit operated by a difierent key.

Another object of this invention is to provide for the'mountingof all of the operating parts of the bolt controlling mechanism upon a frame which shall be removably supported in operative position relative to the bolt which it controls, within'the usual lock casing. f

To these and other ends the invention con slsts n the novel features and combinations of parts to be hereinafter described and claimed. I y In the accompanying drawings: Fig. 1 is a front elevational view of the mechanism of a lock embodying my improvements, the front cover of the casing. having been removed;

Fig. 2 is an enlarged sectional view on line 22 of Fig. 5. the cover plate having been removed toexpose the working parts of the lock. The mechanism-here is shown as controlling the dead bolt' of the lock and its position correspondsto that of the retracted position of thebolt Fig. 3 is. a view similar. to Fig. 2 showing the operation of the controlling mechanism as the bolt is beingmoved to protracted position;

Fig. 4 1s a view ofthe controllingmecha- V nism from-the opposite side showing. its position when the bolt has been fully protraoted, taken upon line 4e.4 of Fig. 5;

Fig. 5 is a sectional view on line 5-5 of J Fig. 6 is a sectional view on line '66 of Fig. 1; I

Fig. 7 is a view similar to Fig. 1, but

showing. my improved bolt controlling inelcchanism applied to the latch boltof a While I-have chosen to show my improved lock mechanism in connection with what is commonly known as a mortise lock, it will be apparent that the principles of the invention may be equally applicable and useful in locks of other types. I have shown at 10 the usual lock casing in which is mounted a latch bolt 11 having a stem 12 surrounded by a coil spring 13 which reacts against the shoulder on the forward portion of the stem and against apair of lugs 14: upon the lock case to normally protract the latch. Upon the rear endof the stem is mounted a crosshead 15, whichmay'be engaged by a finger 16 upon a sliding yoke 17,-operated by the usual roll-back 18 to retract the latch bolt when the door is to be opened. A coil spring 19 surrounding a stem in the sliding yoke normally maintains the yoke in its forwardor inoperative position.

The dead bolt 20 is shown in this instance as mounted in the upper part of the casing 10 above the latch bolt and it is provided with a stem 21 of peculiar shape which projects upwardly toward the upper part of the casing andis provided with an arm 22 directed rearwardly in a generally horizontal direction. This arm 22 is provided with a notch 23 into which projects a controlling finger 24 which is a part of the operating slide of the controlling mechanism.

The controlling mechanism is designated as a whole by the numeral 25 and, as will be apparent, consists of the'entire controlling mechanism for the bolt (in this instance the dead bolt) so mounted that it maybe placed in the lock casing and removed therefrom as a unit without disturbing the parts heretofore described. This controlling mechanism in this instance consists of a frame composed of the two plates 26 and 27 connected by suitable posts 28, although the details of construction of this frame are not important and in the application of the broad principles of the invention, it may not be necessary to have a frame at all. This frame is, in the form shown, positioned within the lock casing by the plates 26 and 27 thereof being placed within depressions or wells 10 and 10 formed in the front and rear walls of the lock casing. However, other suitable positioning or securing means may be provided, if desired.

Upon one of the posts 28 are pivoted a plurality of swinging tumblers 29 urged to their normal or lower positions shown in Fig. 2' by suitable springs which react against another of the posts 28. These tumblers are provided upon their forward faces with suitable recesses 31, the purpose of which will be hereinafter explained.

The operating slide of the lock controlling mechanism is designated by the numeral 32 and is slidably mounted upon the frame by virtue of slots 33, 34 and 35 formed therein through which certain of the posts 28 project. Near the rear end of this slide are provided talons 36, which are adapted to be engaged by the bit 37 of the key. The slide, as has already been stated, carries the controlling finger 24 so that when the slide is moved forwardly by the key, the bolt 20 will be protracted. A shoulder 38 is provided upon the forward lower corner ofthis slide and has a beveled upper surface 39 adapted to be engaged by a complemental surface 40 formed upon the lower portion of a swinging detent 41 pivotally mounted upon one of the posts 28. This detent is normally urged by the spring 43 into engagement with the shoulder 38. '7 v This swinging detent is provided with a lug 42 which extends across the face of the tumblers. as is clearly shown in Figs. 5 and 6. and is adapted to be received in the recesses 21 in the face of the tumblers when these recesses are aligned and moved to the proper position by the key bit. When the tumblers are in this position, the pressure of the key bit upon the operating slide 32- will impart a forward motion to this slide, and due to the beveled upper surface of the shoulder 38, the swinging detent will be moved clockwise about its pivotal point, the lug 42 entering the recesses 31 and the lower portion 40'being moved upwardly a sufficient extent to allow the shoulder 38 of the slide to pass thereunder. The slide will then be moved forwardly by the key, the controlling finger 24 acting to protect the bolt.

The bolt stem may, if desired, be provided with a small tongue 44, which fits into a recess 45 in the operating slide 32 to provide a more secure connection between the bolt stem and slide.

In Fig. 7 of the drawings, there is shown a modified form of my invention in which the removable-swinging tumbler mechanism is shown mounted in operative relation to the latch bolt to dog this bolt against retraction when the lock mechanism is operated. The operating parts of the swinging tumbler lock mechanism is precisely the same in this form of the invention as that described in connection with Figs. 1 to 6. The reciprocable controlling finger '24 is, as shown in Fig. 7, mounted in such a position relative to the latch bolt 11, that upon its movement to a forward position, as shown in dotted lines in this figure, it will abut the rear end of the stem 12 of the latch bolt andprevent the retraction of the bolt by the knob.

In the lower part of this look casing is mounted a pair of locking bolts such as are commonly used in a lock to be placed upon a door between twov communicating rooms so that one of the bolts may be thrownfron'i each side thereof. As this is a construction of usual form and has no particular con nection with the invention described in this application further description thereof is considered unnecessary.

It will be seen, therefore, that the swinging tumbler mechanism which I have provided may be used in connection with the operation of a dead bolt or may be used to dog a latch bolt, and it is to be understood, therefore, that when it is referred to as a bolt controlling mechanism, this expression is used broadly and is meant to include both the operation of the dead bolt and the doggingof the latch bolt, and it will also be apparent that the term bolt when used without a modifying word may refer either to the dead bolt or to the latch bolt.

While I have shown and described some preferred. embodiments of my invention, the same is not limited thereto in all its details, but is capable of many modifications and variations which lie within the spirit of the invention and within the scope of the appended claims. I

I do not claim herein the specific structure of my lock controlling mechanism, as that subject matter is claimed in my copending application Serial No. 461,605, filed June 30, 1921.

What I claim is:

1. A lock comprising a casing, a bolt slidably carried thereby, a frame removably mounted in the casing, a bolt controlling slide carried thereby and slide controlling tumblers mounted upon the frame.

2. A lock comprising a casing, a bolt slidably carried thereby, a frame removably mounted in the casing, a bolt controlling slide carried thereby and slide controlling tumblers pivoted to the frame.

3. In a look, a bolt, and a unitary controlling mechanism therefor including swinging tumblers, said mechanism being removable from said lock, and including a frame and a bolt operating member carried by the frame.

1. In a look, a bolt, and a unitary controlling mechanism therefor including a frame and swinging bolt controlling tumblers mounted thereon.

5. In a look, a bolt, and controlling mechanism therefor including swinging mechanism, said mechanism being removable as a unit from the lock independently of the bolt.

6. A lock comprising, a casing, a. bolt operatively mounted therein and a removable unitary swinging tumbler mounted in said casing to control said bolt.

7. A look comprising a casing, a bolt operatively mounted therein, and a unitary swinging-tumbler, key-operated, controllin mechanism for said bolt, removably mounts in said casing.

8. A look comprising a casing, a bolt operatively mounted therein, and a swing-tumbler controlling mechanism for said bolt, bodily removable from said lock casing.

9. A look comprising a casing, a bolt operatively mounted therein and controlling mechanism for the bolt including swinging tumblers, said tumblers being. mounted for removal as a unit from the casing.

10. A lock having a casing and a bolt mounted therein, and means to protract the same, said means including a frame removably mounted in the casing and a unitary swinging-tumbler mechanism carried by the frame.

11. A look having a casing, a bolt mounted therein, and means to protract the bolt including a swinging-tumbler mechanism removable as a unit from said casing.

12. A look having a casing, a bolt mounted therein and a unitary removable mechanism to protract said bolt and retain it in protracted position.

13. A look having a casing, a bolt mountmechanism 1 ed therein and means to reciprocate said bolt in opposite directions and-retain at either limit of its movement, said means being bodily removable as a unit from the lock casing.

14. In a lock, in combination, a dead bolt, and a unitary removable swinging-tumbler mechanism to reciprocate the same, said mechanism having a bolt controlling member slidable relatively to the tumblers.

15. I11 combination with a lock casing and a bolt carried thereby, swinging tumblers controlling the operation of the bolt, a support for said tumblers removable from the casing, and a tumbler controlled bolt operating member carried by the support.

16. In combination with a lock casing and a bolt carried thereby, a removable tumbler support mounted in the casing and a plurality of swinging bolt-controlling tumblers mounted on said support.

17. In combination with a lock casing and a bolt carried thereby, a frame removably mounted in the casing independently of the bolt and swinging bolt controlling tumblers mounted on said frame.

18. In combination with a lock casing and a bolt operatively mounted therein, a unitary removable bolt controlling mechanism mounted in said case including a frame and a reciprocable bolt controlling member carried thereby, having a bolt controlling finger.

19. In combination with a lock casing and a bolt operatively mounted therein, a unitary removable bolt controlling mechanism mounted in said case, having a reciprocable finger engaging the bolt stem to control the position of the bolt.

20. In combination with a lock casing having a bolt operatively mounted therein, a removable bolt a controlling mechanism mounted in the case having a supporting frame and a finger protruding from the frame in constant engagement with said bolt.

21. In combination, a lock case, lock mechanism removably mounted in the case, said mechanism including a pair of side plates secured together in spaced relation and bolt controlling means mounted between said plates, said means comprising a reciprocable slide, and tumbler mechanism to control said slide, and means to position said plates within the lock case.

22. In combination, a lock case, lock mechanism removably mounted therein, said mechanism comprising a pair of plates, posts connecting said plates in spaced relation, a slide reciprocably mounted on said posts between the plates, tumbler mechanism also mounted between the plates to control said slide, and means for positioning said lock mechanism within the case including recesses formed in the case to receive said side plates.

23. In combination, a lock casing, a bolt reciprocably mounted therein, lock mechanism removably mounted in the case, said mechanism comprising a pair of plates, posts securing said plates in spaced relation, bolt controlling means mounted between said plates, said means comprising a reciprocable bolt controlling slide, a swinging detent for controlling the position of said slide and tumblers for controlling said detent, and means for positioning said plates Within the lock case. I 10 In Witness whereof, I have hereunto set my hand on this 27 day of June, 1921.

WILLIAM J. CARROLL. 

